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(No Model.) 4 sheens-sheet 2.

C. LINFDRD.

l Gas Engine. No. 232,987. YPa ented Oct. 5,1880.

(No Model.) 4 Sheets-Sheet 3.

C. LI'NFORD. Gas Engine. 1 No. 232,987. Patented Oct. 5,1880.

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- C. LINFORD. ee s ee l Gas Engine. No. 232,981. Patented ocr. 5,1880.

Unirse Smarts Retenir raise.,

CHARLES LINEORD, OF LEIGESTER, ENGLAND.

GAS-ENGINE.

SPECIFICATION forming part of Letters Patent No. 232,987', dated October5, 1880. Application led September 3, 1880. (No model.) Patented inEngland April 17, 1870, and January 24, 1880.

To all whom it may concern Be it known that I, CHARLES LINFORD, asubject of the Queen of Great Britain, residing in Leicester, England,have invented new and useful Improvements in and connected' withGasEngines, (for which l have obtained patents in Great Britain, No.1,500, bearing` date April 17, 1879, and No. 330, bearing date January24, 1880,) of which the following is a specification.

This invention relates to and consists in a novel arrangement ofappliances which, in double-acting engines, give an impulse to each oneand a halt' revolution of the crank-shaft, and in a single-acting engineone impulse to every three revolutions of the crank-shaft. This iseffected in the following manner: l admit a charge of gas and air as acombustible body during the travel of the piston or pistons in onedirection. ,I compress the said charge (gas and air) during thereturn-stroke of the piston or pistons. I tire the said charge duringthe next travel of piston or pistons. I exhaust the residues ofcombustion during the next travel ot' the piston or pistons. I admit adistinct column or currentof atmospheric air fromthe atmosphere and freefrom any admixiure of gas during the next travel of the pis` ton orpistons, and then I exhaust the said column or current of atmosphericair during the next travel of the piston or pistons, before the nextbody of gas and air is admitted to the cylinder or cylinders, theadmission and emission of the distinct column or current of theatmospheric air into and from the cylinder or cylinders after andfollowing each exhaust of the residues of combustion being to scavengeror wash out any debris or refuse portions which may be left in thecylinder or cyl inders after the usual exhaust of the spent explosivecharge, said distinct current of air being' sucked into and dischargedfrom the cylinder by the working piston or pistons without the aid ofpumps or other extraneous appliances or apparatus for charging thecylinder with said air. I attain this object bythe mechanism illustratedin the accompanying drawings, in which- Figure l is a right-hand sideView; Fig. 2, a left-hand side View 5 Fig. 3, a transverse sectionthrough the cylinder of atwo-piston balanced gas-engine of my invention,Figs. 4, 5, 6, and 7 showing the slide-seating, the slide, and theslide-cover on a'larger scale. Fig. 8 shows a sectional view of theexhaust-box and its valves. O

I tit on the side of the slide-valve seatingor adjacent thereto a box,A, containing a valve, B, Figs. 1, 4, 5, and (i, which valve isset open,that atmospheric air may freely pass into the port C ofthe slide D andthe mixingvchamber E, and mix with the gas as it enters the main port Ffrom the gas-supply G, which is controlledby the cone H under the actionof the tappet and levers I from the cam J on'the second-motion shaft K,the movement of the slide D, by its connection with the beam M and rodNfrom the second-motion shaft K, shutting off the port C when sufficientair has passed into the chamber E.

The port F terminates in a pipe, P, with openings top and bottom fordistributing the explosive charge well within the cylinder.

The box A has its air-supply pipe Q formed as a branch from the mainair-pipe R, this terminating in a bell-shaped apparatus, S, at tached tothe side of the engineframing T.

The bell-shaped apparatus shown in section at Fig. 9 has withinitaconical partition with a clearance around its edge, that atmosphericair may enter the pipe It by the nozzle U, as indicated by the arrows.

The pistonsVV having been moved apart by the action ofthe beams WV W androds X X from the cranks of the first-motion shaft Y for the admissionof the explosive charge into the cylinder Z, they return, under themomentum ofthe liywheel a, to compress the charge within thetiring-chamber b, and as they commence their return-stroke the charge istired by the ignition of live gas supplied by the pipe c, which comesinto contact with the outside flame, d, from the pipe e when the cavityf of the slideDand I--shaped aperture hare brought down to coincide withthe angled slot g of the cover, Fig. 7, the slot then forming acommunication by the through-aperture h of the slide D to the port C,asshownby Fig. 5.

The pistons, having received their impulse under the expansion of theexploded charge, return to force the residues of combustion through theexhaust-boxt' and pipe j, the valve IOO 7c (see sectional view, Fig. l0)opening for that purpose under the action of the tappet l and cam m onthe second-motion shaft K. The cam m extends to nearly one-half thecircumference of second-motion shaft K, as shown by Fig. 2, that thevalve 7c may remain open during the next out-travel of the pistons VV,the slide D at the commencement of this outtravel of the pistons movingdown to open the passage a, with the port C, as shown at Fig. l0, forthe inflow1 of clean atmospheric air to the cylinder, in this action thegas-supply being shut off. A further supply of clean atmospheric airpasses also into the cylinderI by the pipe p and exhaust-box t', thevalve q bein g lifted and opened and the exhaust outletvalve r closed bythe outward sucking action of the pistons. The cylinder by this means becomes filled with clean atmospheric air, which on the next or returnstroke of the pistons is forced out through the exhaust-pipe j, thevalveq becoming closed andthe valve r opened under the internalpressure. At the return ofthe pistons for the exhaust of the cleanatmospheric air the valve B instantly closes, and insures the passage ofthe air through exhaust, together with any particle of the previousresidue of combustion which may have remained in the tiring-chamber bafter the last primary exhaust.

The particular formation of the through-ap# erture IL in the slide D, inconjunction with the angled slotg in the cover, is an important featurein my invention7 because all back-dash of the fire at the instant ofexplosion is prevented, the slide by its movement carrying the ignitedinner iame in the slide so suddenly past the opening Where it receivedits ignition from the outer flame d.

The second-motion shaft K receives its rotation by the three-to-onegearing s, the governor t, as in an ordinary steam-engine, regulatingthe speed.

u u are the water-jacket pipes.

I have particularly described my invention as applied to a two-pistongas-engine; butit is obvious that I can employ my details-namely, thevalve B in the air-supply leading to the slide, the peculiar or E`shapedthrough-aperture 71l in the slide, andthe angled slot g in theslide-cover-in other constructions of gas-engines, wherein I can, by atlnee-to-one arrangement of gearing and cam actions, substantially ashereinbefore described, admit a distinct current of clean atmosphericair into and discharge the same from the cylinder after each exhaust ofthe residues of the ordinary combustion and before the admission of afresh charge of combustible gas, as herein set forth.

Having fully described my invention, what I claim, and desire to secureby Letters Patent, is-

1. In a gas-en gine, the hinged set-open valve B in the air-supply Q,leading to the slide D,

substantially as described.

2. In a gas-engine, the i'shaped throughaperture h in the slide, incombination with the angled slot g in cover, constructed and arrangedsubstantially as shown and described.

3. rlhe combination, with the valve B in the air-supply, formed asshown, of air-chamber C and mixing-chamber E in slide D, as and for thepurpose set forth.

4. rIhe live-gas aperturef and channels leading therefrom in slide D,arranged as shown at Fig. 6, and for the purpose described.

5. The cam m on second-motion shaft K, in combination with tappet Z, forkeeping exhaust-valve 7c open for ordinary exhaust and during admissionand emission of scavenger charge, substantially as described.

6. In combination with an exhaust-box of a gas-engine, the valves 7i: qr, arrangedA substantially as shown and described.

7. In a gasengine, the mode of using the air-passages in valve seatingand slide D, for supplying a scavenger charge, substantially asdescribed.

S. In an air-engine, the attachment to the air-feed, consisting of pipeIt, with bent nozzle U, and the eonoidal partition with clearance,arranged substantially as shown and described.

9. rIhe two-holed distributing-pipe I), arranged in the two-pistongas-engine herein described, constructed substantially as shown anddescribed.

l0. The balanced two-piston gas -engine, with the several appliances,arranged as shown and acting in the manner described, whereby a distinctcharge of clean air is admitted to and expelled from the cylinder by theWorking-pistons to scavenger said cylinder after each ordinary exhaust-of the residues of conibustion, substantially as described.

In Witness whereof I have hereunto signed my name in the presence of twosubscribing Witnesses.

CHARLES LINFORD.

Vitnesses: y

HnNRitT GARDNER, RrcHARD GORE GARDNER.

IOO

